As for the mandibular postural position, which one is NOT correct? ()
A. It is the mandibular resting position.
B. It is stable and repeatable.
C. It refers to the mandibular position when a person stands or sits in an upright posture, looking straight ahead, and there is no chewing, no swallowing, and no speaking. What’s more, the mandibular teeth do not contact the maxillary teeth.
D. There is a 1-3 mm gap between maxillary and mandibular incisors.
E. There is no electrical activity of the mandibular elevating muscles.
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What are the physiological significance of the protrusive occlusal mandibular position? ()
A. It protects posterior teeth.
B. It helps cut food.
C. It protects the temporomandibular joint.
D. It stabilizes the occlusion.
The movement range of the mandible includes ()
A. the border movement
B. the tapping movement
C. the functional movement
D. the masticatory movement
Which function of the oral cavity relays on the mandibular movements? ()
A. Chewing
B. Swallowing
C. Speech
D. Sensation
E. Sucking
控制下颌运动的主要因素有:() A. 解剖性控制因素
A. 生理性控制因素
B. 神经系统
C. 肌肉系统
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